The difference between conservation-restoration approach to archeological and historical metal objects

U ovom su radu obrađene sličnosti i razlike između dva konzervatorsko-restauratorska pristupa. Jedan se dio rada odnosi na pristup predmetima od arheološkog metala, s naglaskom na uporabi mehaničkog čišćenja i razlogu njegove primjerenosti za ovu vrstu materijala. Kao primjer su priložene dokumentacije konzervatorsko-restauratorskih radova na predmetima od arheološkog željeza, arheološke bronce i arheološkog olova. Drugi se dio rada bavi pristupom povijesnim predmetima od metala, s naglaskom na uporabi mehaničkog, ali i mogućnosti uporabe kemijskog čišćenja. Kao primjer su priložene dokumentacije konzervatorsko-restauratorskih radova na predmetima od djelomično emajliranog željeza i srebra.This paper focuses on similarities and differences between two conservation-restoration approaches. One part of the paper deals with approach to archaeological metal objects, with emphasis on the use of mechanical cleaning and the reason for its suitability for this type of material. Examples are enclosed documentations of conservation- restoration works on archaeological iron, archaeological bronze and archaeological lead objects. The second part of the paper deals with approach to historical metal objects, with emphasis on the use of mechanical, but also the possibility of using chemical cleaning. Examples are enclosed documentations of conservation-restoration works on partially enamelled iron object and silver object